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publications > open file report > OFR-00-327 > table 10
Regional Geochemistry of Metals in Organic-Rich Sediments, Sawgrass and Surface Water, from Taylor Slough, Florida
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| Table 10. Calculated sediment ages and depositional rates for 210Pb-dated cores. Parameters used in the calculations are also shown.
[--, not determined; \, determined but data not presented; site number keyed to fig. 2;] |
| Depth top, cm |
Depth botttom, cm |
Center pt., cm |
dry bulk density g/cm3 |
Excess 210Pb activity dpm/g |
Depth interval date |
Sedimentation rate cm/yr |
Sediment accum. rate g/cm2/yr |
| Site TS1 (51796-1; geochronology core no. 2; geochemistry core no. 1) |
| 0 |
2 |
1 |
0.03 |
20 |
1995 |
1.52 |
0.05 |
| 2 |
4 |
3 |
0.16 |
20 |
1994 |
1.28 |
0.20 |
| 4 |
6 |
5 |
0.16 |
19 |
1992 |
1.12 |
0.18 |
| 6 |
8 |
7 |
0.20 |
15 |
1989 |
1.00 |
0.20 |
| 8 |
10 |
9 |
0.26 |
14 |
1986 |
0.90 |
0.23 |
| 10 |
12 |
11 |
0.26 |
13 |
1983 |
0.84 |
0.22 |
| 12 |
14 |
13 |
0.25 |
13 |
1979 |
0.79 |
0.20 |
| 14 |
16 |
15 |
0.28 |
10 |
1979 |
0.79 |
0.22 |
| 16 |
18 |
17 |
0.24 |
14 |
1976 |
0.75 |
0.18 |
| 18 |
20 |
19 |
0.27 |
9.9 |
1973 |
0.74 |
0.20 |
| 20 |
22 |
21 |
0.29 |
8.0 |
1970 |
0.74 |
0.21 |
| 22 |
24 |
23 |
0.33 |
9.4 |
1969 |
0.78 |
0.26 |
|
| Site TS7 (51796-5; geochronology core no. 6; geochemistry core no. 5) |
| 0 |
2 |
1 |
-- |
-- |
-- |
-- |
-- |
| 2 |
4 |
3 |
0.13 |
17 |
1975 |
0.05 |
0.01 |
| 4 |
6 |
5 |
0.21 |
4.6 |
1933 |
0.05 |
0.01 |
| 6 |
8 |
7 |
0.28 |
0.94 |
1892 |
0.05 |
0.01 |
| 8 |
10 |
9 |
0.30 |
0.45 |
1850 |
0.05 |
0.01 |
| 10 |
12 |
11 |
0.42 |
0.37 |
1808 |
0.05 |
0.02 |
| 12 |
14 |
13 |
0.21 |
0.31 |
1766 |
0.05 |
0.01 |
| 14 |
16 |
15 |
0.13 |
0.35 |
1724 |
0.05 |
0.01 |
| 16 |
19 |
17 |
0.12 |
0.31 |
1682 |
0.05 |
0.01 |
| 18 |
20 |
19 |
0.10 |
-- |
-- |
-- |
-- |
| 20 |
22 |
21 |
0.10 |
-- |
-- |
-- |
-- |
| 22 |
24 |
23 |
0.11 |
-- |
-- |
-- |
-- |
| 24 |
26 |
25 |
0.10 |
-- |
-- |
-- |
-- |
| 26 |
28 |
27 |
0.11 |
-- |
-- |
-- |
-- |
| 28 |
30 |
29 |
0.10 |
-0.06 |
1432 |
0.03 |
0.003 |
| \ |
\ |
\ |
\ |
\ |
\ |
\ |
\ |
| \ |
\ |
\ |
\ |
\ |
\ |
\ |
\ |
| 74 |
76 |
75 |
0.12 |
-- |
-- |
-- |
-- |
|
| Site TS7E (52096-14; geochronology core no 13; geochemistry core no. 14) |
| 0 |
2 |
1 |
0.16 |
11 |
1989 |
0.15 |
0.02 |
| 2 |
4 |
3 |
0.34 |
7.2 |
1975 |
0.15 |
0.05 |
| 4 |
6 |
5 |
0.36 |
4.9 |
1962 |
0.15 |
0.05 |
| 6 |
8 |
7 |
0.22 |
-- |
-- |
-- |
-- |
| 8 |
10 |
9 |
0.27 |
1.8 |
1934 |
0.15 |
0.04 |
| 10 |
12 |
11 |
0.32 |
0.58 |
1920 |
0.15 |
0.05 |
| 12 |
14 |
13 |
0.34 |
0.67 |
1906 |
0.15 |
0.05 |
| 14 |
16 |
15 |
0.34 |
0.52 |
1893 |
0.15 |
0.05 |
| 16 |
18 |
17 |
0.35 |
0.38 |
1879 |
0.15 |
0.05 |
| 18 |
20 |
19 |
0.29 |
0.37 |
1865 |
0.15 |
0.04 |
| 20 |
22 |
21 |
0.21 |
-- |
-- |
-- |
-- |
| 22 |
24 |
23 |
0.19 |
-- |
-- |
-- |
-- |
| 24 |
26 |
25 |
0.17 |
-- |
-- |
-- |
-- |
| 26 |
28 |
27 |
0.14 |
-- |
-- |
-- |
-- |
| 28 |
30 |
29 |
0.23 |
0.37 |
1796 |
0.15 |
0.03 |
| \ |
\ |
\ |
\ |
\ |
\ |
\ |
\ |
| \ |
\ |
\ |
\ |
\ |
\ |
\ |
\ |
| 74 |
76 |
75 |
0.84 |
-- |
-- |
-- |
-- |
| Note: This is a continuation of table above. |
| Depth top, cm |
Depth botttom, cm |
Center pt., cm |
dry bulk density g/cm3 |
Excess 210Pb activity dpm/g |
Depth interval date |
Sedimentation rate cm/yr |
Sediment accum. rate g/cm2/yr |
| Site TS9 (52096-10; geochronology core no. 7; geochemistry core no. 10) |
| 0 |
2 |
1 |
0.24 |
11 |
1976 |
0.05 |
0.01 |
| 2 |
4 |
3 |
0.30 |
3.3 |
1938 |
0.05 |
0.02 |
| 4 |
6 |
5 |
0.48 |
0.55 |
1899 |
0.05 |
0.02 |
| 6 |
8 |
7 |
0.39 |
0.71 |
1860 |
0.05 |
0.02 |
| 8 |
10 |
9 |
0.21 |
0.93 |
1821 |
0.05 |
0.01 |
| 10 |
12 |
11 |
0.25 |
0.20 |
1782 |
0.05 |
0.01 |
| 12 |
14 |
13 |
0.33 |
0.09 |
1743 |
0.05 |
0.02 |
| 14 |
16 |
15 |
0.43 |
0.10 |
1704 |
0.05 |
0.02 |
| 16 |
18 |
17 |
0.35 |
0.22 |
1665 |
0.05 |
0.02 |
| 18 |
20 |
19 |
0.43 |
0.05 |
1626 |
0.05 |
0.02 |
| 20 |
22 |
21 |
0.40 |
-- |
-- |
-- |
-- |
| 22 |
24 |
23 |
0.45 |
-- |
-- |
-- |
-- |
| 24 |
26 |
25 |
0.41 |
-- |
-- |
-- |
-- |
| 26 |
28 |
27 |
0.44 |
-- |
-- |
-- |
-- |
| 28 |
30 |
29 |
0.51 |
0.09 |
1431 |
0.05 |
0.03 |
| \ |
\ |
\ |
\ |
\ |
\ |
\ |
\ |
| \ |
\ |
\ |
\ |
\ |
\ |
\ |
\ |
| 68 |
70 |
69 |
0.22 |
-- |
-- |
-- |
-- |
|
| Site TS15 (52496-23; geochronology core no 22; geochemistry core no. 23) |
| 0 |
2 |
1 |
-- |
29 |
-- |
-- |
-- |
| 2 |
4 |
3 |
0.05 |
30 |
-- |
-- |
-- |
| 4 |
6 |
5 |
0.09 |
29 |
1990 |
0.16 |
0.01 |
| 6 |
8 |
7 |
0.08 |
17 |
1980 |
0.16 |
0.01 |
| 8 |
10 |
9 |
0.09 |
11 |
1964 |
0.16 |
0.01 |
| 10 |
12 |
11 |
0.12 |
9.5 |
1951 |
0.16 |
0.02 |
| 12 |
14 |
11 |
0.10 |
6.6 |
1939 |
0.16 |
0.02 |
| 14 |
16 |
15 |
0.09 |
6.7 |
1939 |
0.16 |
0.01 |
| 16 |
18 |
17 |
0.09 |
3.8 |
1926 |
0.16 |
0.01 |
| 18 |
20 |
19 |
0.09 |
1.1 |
1913 |
0.16 |
0.01 |
| 20 |
22 |
21 |
0.09 |
1.1 |
1900 |
0.16 |
0.01 |
| 22 |
24 |
23 |
0.10 |
-- |
-- |
-- |
-- |
| 24 |
26 |
25 |
0.10 |
-- |
-- |
-- |
-- |
| 26 |
28 |
27 |
0.09 |
-- |
-- |
-- |
-- |
| 28 |
30 |
29 |
0.09 |
1.9 |
1837 |
0.11 |
0.01 |
| \ |
\ |
\ |
\ |
\ |
\ |
\ |
\ |
| \ |
\ |
\ |
\ |
\ |
\ |
\ |
\ |
| 76 |
78 |
77 |
0.16 |
-- |
-- |
-- |
-- |
|
| Site TS16 (52496-27; geochronology core no 26; geochemistry core no. 27) |
| 0 |
2 |
1 |
0.11 |
14 |
-- |
-- |
-- |
| 2 |
4 |
3 |
0.11 |
22 |
1989 |
0.14 |
0.01 |
| 4 |
6 |
5 |
0.12 |
19 |
1974 |
0.14 |
0.02 |
| 6 |
8 |
7 |
0.14 |
9.8 |
1959 |
0.14 |
0.02 |
| 8 |
10 |
9 |
0.15 |
2.9 |
1944 |
0.14 |
0.02 |
| 10 |
12 |
11 |
0.13 |
2.2 |
1930 |
0.14 |
0.02 |
| 12 |
14 |
13 |
0.12 |
0.55 |
1915 |
0.14 |
0.02 |
| 14 |
16 |
15 |
0.13 |
0.67 |
1900 |
0.14 |
0.02 |
| 16 |
18 |
17 |
0.12 |
0.25 |
1885 |
0.14 |
0.02 |
| 18 |
20 |
19 |
0.14 |
0.05 |
1870 |
0.14 |
0.02 |
| 20 |
22 |
21 |
0.13 |
-- |
-- |
-- |
-- |
| 22 |
24 |
23 |
0.14 |
-- |
-- |
-- |
-- |
| 24 |
26 |
25 |
0.14 |
-- |
-- |
-- |
-- |
| 26 |
28 |
27 |
0.15 |
-- |
-- |
-- |
-- |
| 28 |
30 |
29 |
0.14 |
-0.44 |
1796 |
0.14 |
0.02 |
| \ |
\ |
\ |
\ |
\ |
\ |
\ |
\ |
| \ |
\ |
\ |
\ |
\ |
\ |
\ |
\ |
| 74 |
76 |
75 |
0.24 |
-- |
-- |
-- |
-- |
|
